Sliding clasp fastening



Patented June 16, 1931 UNITED STATES MARTIN WINTERHALTER, or HALLE-oN THE-SAALE, GERMANY SLIDING CLASP FASTENING No Drawing. Application filed September 6, 1928, Serial No. 304,383, and in Germany October 24, 1927. g I

The tapes used for carrying the locking members in sliding clasp fastenings have one longitudinal edgeprovided with a thickening, on which the lockingmembers are clamped. This thickening is usually formed by two separate cords sewn to the tape. If

the cord and the tape be made of equal length and the tape be subsequently sewn to a garment or the like, the two rows of locking members to be closed by the sliding member will diverge and the sliding member will be very stiff to move.

German Patent Specification 325390 to make the cords shorter than the bands. This, how-- 7 ever, has the effect of causing small puckers to form in the part of the band bordered by the cords and these puckers ofier reistance to the sliding member, detrimentally affect-1 ing its freedom of motion. A further disadvantage in the latter case is that, as the band and the cords, owing to their being sewn together, represent organically inclependent members, the cords are alone stressed when the locking members are clamped on.

' so density could be increased. It would be a further advantage to make use of the band itself as well for supporting the locking members. In doing this, however, the freedom of motion of the sliding member must s5 not be adversely affected, care being taken that the disadvantage of the puckering' in the bandin the vicinity of the thickened edge 1 is avoided and that therows of locking members face one another;

The problem thus set out is solved by the present invention in the first place by the band and the cord being woven together so that they form an organic whole. In addition to this the cords and preferably the adjacent warp threads of the band are specially In order to overcome I this difliculty, it has already been proposed in.

stretched during the weaving operation. 7 When the cords are made in the'form of a greater density if the density remains rounding of the band is effected, that is the converging of the edges of the band whichv are bordered withcord,

Hence, the weaving and stretching are essential for the method of manufacture according to the invention, that is for the greater resistance ofthe thickened edge and for producing the round shape. Should the latter effectnot be obtainable in a suflicient degree through the stretching v of the band remote from the thickened edge may be stretched in thefinished woven mate rial, for instance by winding the same on to conical rollers.

What I claim is:

1. A method of manufacturing bands double corded at one of their edges for sliding clasp fastenings, consisting in weaving the bands and the cordstogether and stretching the cords alone during the weaving operation, as and for the purpose set forth;

2. A method of manufacturing bands double corded at one of their edgesfor slidring clasp fastenings, consisting in weaving the bands and the cords together and stretchprocess the parts 7 ing only the cords and the adjacent warp 7 threads of the band during the weaving operation, as and for the purpose set forth.

3. A method of manufacturing bands corded at one of their edges for sliding clasp fastenings, consisting in weaving the bands and two cords alone together at said edge of each band, stretching the cords during the Weaving operation and subsequently stretching the parts of the band remote from the corded edge Without stretching the main portions thereof, as and for the purpose'set forth.

In testimony whereof I have signed my name to this specification. V

MARTIN WINTERHALTER. 

